Ship s warping-chock



PATENT OFFICE.

DAVID KNOWLTON, OF CAMDEN, MAIE.-

SHIPS WARPING-CI-IOCK.

Specification of Letters Patent No. 24,810, dated July 19, 1859.

To all whom it may concern:

Be it known that I, DAVID KNowL'roN, of Camden, in the county of Valdo and State of Maine, have invented a new and useful Improvement in lVarping-Chocks for Ships and other Vessels; and I do hereby declare that the same is described and represented in the following specifications and drawings.

To enable others skilled in the art to make and use my improvement I will proceed to describe its construction and operation re ferring to the drawings in which the same letters indicate like parts in each-of the Iigures.

Figure 1 is an elevation of a warping chock with my imprmement. Fig. 2 is a plan, and Fig. 3 a section of the same.

The nature of my invention and improvement in warping chooks consists in making the stock or base and standards of cast iron, and narrowing and hollowing out the stands behind the rollers, so as to let the rope or warp run freely around the rollers, without .being chafed by the stand.

In the accompanying drawings, A is the base of the warping chock provided with holes B, B, for the bolts to fasten it in the position desired.

C, C, are projections extending up from the base A, in the form shown in the drawing making firm stands, which stands and base are perforated for the pins D, D, which pass through them and through the rollers E, E, as shown in the section Fig. 8.

The rollers E, E, are arranged to turn freely on the pins D, D, and are hollowed out or made smallest in the middle, so as to fit the warp or rope running around them. The projections or stands C, C, are hollowed out on each side behind the rollers and made narrower than the rollers, at the ends next to the rollers, so as not to chafe or wear the rope as it is drawn around the rollers in warping a ship or vessel.

Every article about the hull of a vessel is so liable to be frequently wet with salt water, which rusts or corrodes iron very fast, and would soon rust the outsides of the pins D, and the insides of the rollers E, so that they would stick fast to the pins, and not turn at all, and therefore increase the friction and wear of the rope passing around the roller. To prevent the rusting of the pin and roller, and to provide for lubricating them, I have made an oil hole F, for each pin and roller rollers 'for the rope or warp to run aroundg.

and hollowing out the sides of the stands at the ends next to the rollers, so as to make them less in width than the diameters of the rollers, so that the stands will not chafe or wear the ropes or warps, as they run around the rollers.

I believe I have described and represented my improvements in warping chocks, so as to enable any person skilled in the art to make and use them. I will now state what I desire to secure by Letters Patent viz.

I claim- The castiron warping chock described as a new article of manufacture.

DAVID KNOIVLTON.

Titnesses I. DENNIS, Jr., EDw. F. BROWN. 

